What is the range of multiple UAVs in the same system?

How many ranges do multiple UAVs have in the same system? The effective range of drone shooting is 20 kilometers. At present, the maximum relative height of UAV aerial photography is 500 meters (from the plane's take-off point). According to the relevant regulations of civil aviation, the octagonal area 20 km long and 10 km wide from the center of both ends of the runway is a no-fly zone, and the relative flying height outside the octagonal no-fly zone within the range of 10 km to 20 km is 120 m. The micro UAV with a weight less than or equal to 7kg should be shot within the visual sight distance with a radius of 500m and a relative height less than 120m. However, it is necessary to prevent remote-controlled aircraft from entering high airspace as much as possible, and to bring drone pilots with weights above the above standards and pilots flying into complex airspace into the supervision scope of industry associations and even civil aviation authorities.